<template>
  <div>
    <TypeNav />
    <div class="main">
      <div class="py-container">
        <!--bread-->
        <div class="bread">
          <ul class="fl sui-breadcrumb">
            <li>
              <a href="#">全部结果</a>
            </li>
          </ul>
          <ul class="fl sui-tag">
            <li class="with-x" v-if="searchParams.categoryName">{{ searchParams.categoryName }}<i
                @click="removeCategoryName">×</i></li>
            <li class="with-x" v-if="searchParams.keyword">{{ searchParams.keyword }}<i @click="removeKeyword">×</i></li>
            <!-- 这里必须v-if，v-show的话，如果trademark是undefined，trademark.split会报错 -->
            <li class="with-x" v-if="searchParams.trademark">{{ searchParams.trademark.split(':')[1] }}<i
                @click="removeTrademark">×</i></li>
                <!-- 这里面包屑props数组有增删，不用index，虽然index不会出错，但是效率低。 -->
            <li class="with-x" v-for="(prop, index) in searchParams.props" :key="prop">{{ prop.split(':')[1] }}<i
                @click="removeProp(index)">×</i></li>
          </ul>
        </div>

        <!--selector-->
        <SearchSelector @searchForTrademark="searchForTrademark" @searchForAttr="searchForAttr" />

        <!--details-->
        <div class="details clearfix">
          <div class="sui-navbar">
            <div class="navbar-inner filter">
              <ul class="sui-nav">
                <li :class="{ active: originFlag === '1' }">
                  <a href="javascript:;" @click="sortGoods('1')">综合
                    <i class="iconfont" :class="{ 'icon-down': originType === 'desc', 'icon-up': originType === 'asc' }"
                      v-if="originFlag === '1'"></i>
                  </a>

                </li>
                <li :class="{ active: originFlag === '2' }">
                  <a href="javascript:;" @click="sortGoods('2')">价格
                    <i class="iconfont" :class="{ 'icon-down': originType === 'desc', 'icon-up': originType === 'asc' }"
                      v-if="originFlag === '2'"></i>
                  </a>
                </li>
              </ul>
            </div>
          </div>
          <div class="goods-list">
            <ul class="yui3-g">
              <li class="yui3-u-1-5" v-for="item in goodsList" :key="item.id">
                <div class="list-wrap">
                  <div class="p-img">
                    <router-link :to="`/detail/${item.id}`" ><img v-lazy="item.defaultImg" /></router-link>
                  </div>
                  <div class="price">
                    <strong>
                      <em>¥</em>
                      <i>{{ item.price }}</i>
                    </strong>
                  </div>
                  <div class="attr">
                    <router-link  :to="`/detail/${item.id}`" :title="item.title">{{ item.title }}</router-link>
                  </div>
                  <div class="commit">
                    <i class="command">已有<span>2000</span>人评价</i>
                  </div>
                  <div class="operate">
                    <a href="success-cart.html" target="_blank" class="sui-btn btn-bordered btn-danger">加入购物车</a>
                    <a href="javascript:void(0);" class="sui-btn btn-bordered">收藏</a>
                  </div>
                </div>
              </li>
            </ul>
          </div>
          <Pagination 
            :currentPage="goodsListData.pageNo"
            :total="total"
            :pageSize="goodsListData.pageSize"
            :continueNum="5"
            @changePage="changePage">
          </Pagination>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import SearchSelector from './SearchSelector/SearchSelector'
import { mapGetters,mapState } from 'vuex'
export default {
  name: 'Search',

  components: {
    SearchSelector
  },
  data() {
    return {
      //初始值：
      searchParams: {
        category1Id: "",
        category2Id: "",
        category3Id: "",
        categoryName: "",
        keyword: "",
        props: [],
        trademark: "",
        order: "1:asc",
        pageNo: 1,
        pageSize: 2,
      }
    }
  },
  computed: {
    // ...mapState('search',['goodsListData'])
    ...mapState('search',['goodsListData']),
    ...mapGetters('search', ['goodsList','total']),
    originFlag() {
      return this.searchParams.order.split(':')[0];
    },
    originType() {
      return this.searchParams.order.split(':')[1];
    }
  },
  methods: {
    getGoodsListData() {
      // 开启命名空间要这么写了
      this.$store.dispatch('search/getGoodsListData', this.searchParams);
    },
    //根据路由对象修改searchParams参数
    handlerSearchParams() {
      //修改数据
      //获取路由携带参数
      let { keyword } = this.$route.params;
      let { category1Id, category2Id, category3Id, categoryName } = this.$route.query;
      // console.log(this.$route.params)
      //参数里值是undefined，在请求时会被浏览器自动去除，不会携带
      let searchParams = {
        ...this.searchParams,
        keyword, category1Id, category2Id, category3Id, categoryName
      }
      // console.log(searchParams)
      //手动去除空串，减少请求携带数据，减轻带宽
      Object.keys(searchParams).forEach(key => {
        if (searchParams[key] === '') {
          //删除属性或者给undefined
          //searchParams[key] = undefined;
          delete searchParams[key];
        }
      })
      this.searchParams = searchParams;
      // console.log(searchParams)
    },

    //从路径删除品类名,同时还有id。即删除query参数
    removeCategoryName() {
      //改变了路径，watch监视后自动修改searchParams并发请求
      this.$router.replace({
        name: 'search',
        params: this.$route.params
      })
    },

    //从路径删除关键字：监视了路由对象，执行函数会删除面包屑关键字
    removeKeyword() {
      this.$router.replace({
        name: 'search',
        query: this.$route.query
      })
      //清空兄弟组件header组件的输入框
      this.$bus.$emit('clearKeyword');
    },
    //父组件自定义子组件的事件回调：按品牌去搜索
    searchForTrademark(trademark) {
      // console.log(trademark)
      //判断是否是重复品牌名
      trademark = `${trademark.tmId}:${trademark.tmName}`;
      if (this.searchParams.trademark === trademark) return;//重复不发送请求
      //接口品牌: "ID:品牌名称"示例: "1:苹果"
      this.searchParams.trademark = trademark;
      //重置页码
      this.searchParams.pageNo = 1;
      //发送请求
      this.getGoodsListData();
    },

    //移除品牌名，重新发请求
    removeTrademark() {
      this.searchParams.trademark = undefined; //undefined会自动从请求体里移除，减轻带宽压力
      //重置页码
      this.searchParams.pageNo = 1;
      this.getGoodsListData();
    },

    //根据属性去搜索：商品属性的数组: ["属性ID:属性值:属性名"]示例: ["2:6.0～6.24英寸:屏幕尺寸"]
    searchForAttr(attr, attrValue) {
      let prop = `${attr.attrId}:${attrValue}:${attr.attrName}`;
      //防止重复点击
      // if (this.searchParams.props.includes(prop)) return;
      if (this.searchParams.props.some(item => item === prop)) return;
      // 必须用vue定义的push等方法，才具有响应式
      // console.log('111')
      this.searchParams.props.push(prop);
      //重置页码
      this.searchParams.pageNo = 1;
      this.getGoodsListData();
    },

    //移除prop，并重新发送请求
    removeProp(index) {
      this.searchParams.props.splice(index, 1);
      //重置页码
      this.searchParams.pageNo = 1;
      this.getGoodsListData();
    },

    //商品排序
    sortGoods(flag) {
      let { originFlag, originType } = this;
      if (flag === originFlag) {
        //说明要切换上下
        this.searchParams.order = `${flag}:${originType === 'asc' ? 'desc' : 'asc'}`;
      } else {
        this.searchParams.order = `${flag}:${originType}`;
      }
      //重置页码
      this.searchParams.pageNo = 1;
      //发送请求：获取数据到vuex，computed监测到重新获取数据，重新渲染页面
      this.getGoodsListData();
    },

    //根据页码去请求
    changePage(pageNo){
      this.searchParams.pageNo = pageNo;
      this.getGoodsListData();
    }

  },
  beforeMount() {
    // this.handlerSearchParams();
  },
  mounted() {
    // this.getGoodsListData();
  },
  watch: {
    //地址改变，$route对象整个会改变
    $route: {
      immediate: true,
      handler() {
        //修改searchParmas，发送请求
        // console.log('watch的handler执行了')
        this.handlerSearchParams();
        //重置页码
        this.searchParams.pageNo = 1;
        this.getGoodsListData();
      }
    }
  }
}
</script>

<style lang="sass" scoped>
  .main {
    margin: 10px 0;

    .py-container {
      width: 1200px;
      margin: 0 auto;

      .bread {
        margin-bottom: 5px;
        overflow: hidden;

        .sui-breadcrumb {
          padding: 3px 15px;
          margin: 0;
          font-weight: 400;
          border-radius: 3px;
          float: left;

          li {
            display: inline-block;
            line-height: 18px;

            a {
              color: #666;
              text-decoration: none;

              &:hover {
                color: #4cb9fc;
              }
            }
          }
        }

        .sui-tag {
          margin-top: -5px;
          list-style: none;
          font-size: 0;
          line-height: 0;
          padding: 5px 0 0;
          margin-bottom: 18px;
          float: left;

          .with-x {
            font-size: 12px;
            margin: 0 5px 5px 0;
            display: inline-block;
            overflow: hidden;
            color: #000;
            background: #f7f7f7;
            padding: 0 7px;
            height: 20px;
            line-height: 20px;
            border: 1px solid #dedede;
            white-space: nowrap;
            transition: color 400ms;
            cursor: pointer;

            i {
              margin-left: 10px;
              cursor: pointer;
              font: 400 14px tahoma;
              display: inline-block;
              height: 100%;
              vertical-align: middle;
            }

            &:hover {
              color: #28a3ef;
            }
          }
        }
      }

      .details {
        margin-bottom: 5px;

        .sui-navbar {
          overflow: visible;
          margin-bottom: 0;

          .filter {
            min-height: 40px;
            padding-right: 20px;
            background: #fbfbfb;
            border: 1px solid #e2e2e2;
            padding-left: 0;
            border-radius: 0;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);

            .sui-nav {
              position: relative;
              left: 0;
              display: block;
              float: left;
              margin: 0 10px 0 0;

              li {
                float: left;
                line-height: 18px;

                a {
                  display: block;
                  cursor: pointer;
                  padding: 11px 15px;
                  color: #777;
                  text-decoration: none;
                }

                &.active {
                  a {
                    background: #e1251b;
                    color: #fff;
                  }
                }
              }
            }
          }
        }

        .goods-list {
          margin: 20px 0;

          ul {
            display: flex;
            flex-wrap: wrap;

            li {
              height: 100%;
              width: 20%;
              margin-top: 10px;
              line-height: 28px;

              .list-wrap {
                .p-img {
                  padding-left: 15px;
                  width: 215px;
                  height: 255px;

                  a {
                    color: #666;

                    img {
                      max-width: 100%;
                      height: auto;
                      vertical-align: middle;
                    }
                  }
                }

                .price {
                  padding-left: 15px;
                  font-size: 18px;
                  color: #c81623;

                  strong {
                    font-weight: 700;

                    i {
                      margin-left: -5px;
                    }
                  }
                }

                .attr {
                  padding-left: 15px;
                  width: 85%;
                  overflow: hidden;
                  margin-bottom: 8px;
                  min-height: 38px;
                  cursor: pointer;
                  line-height: 1.8;
                  display: -webkit-box;
                  -webkit-box-orient: vertical;
                  -webkit-line-clamp: 2;

                  a {
                    color: #333;
                    text-decoration: none;
                  }
                }

                .commit {
                  padding-left: 15px;
                  height: 22px;
                  font-size: 13px;
                  color: #a7a7a7;

                  span {
                    font-weight: 700;
                    color: #646fb0;
                  }
                }

                .operate {
                  padding: 12px 15px;

                  .sui-btn {
                    display: inline-block;
                    padding: 2px 14px;
                    box-sizing: border-box;
                    margin-bottom: 0;
                    font-size: 12px;
                    line-height: 18px;
                    text-align: center;
                    vertical-align: middle;
                    cursor: pointer;
                    border-radius: 0;
                    background-color: transparent;
                    margin-right: 15px;
                  }

                  .btn-bordered {
                    min-width: 85px;
                    background-color: transparent;
                    border: 1px solid #8c8c8c;
                    color: #8c8c8c;

                    &:hover {
                      border: 1px solid #666;
                      color: #fff !important;
                      background-color: #666;
                      text-decoration: none;
                    }
                  }

                  .btn-danger {
                    border: 1px solid #e1251b;
                    color: #e1251b;

                    &:hover {
                      border: 1px solid #e1251b;
                      background-color: #e1251b;
                      color: white !important;
                      text-decoration: none;
                    }
                  }
                }
              }
            }
          }
        }

        .page {
          width: 733px;
          height: 66px;
          overflow: hidden;
          float: right;

          .sui-pagination {
            margin: 18px 0;

            ul {
              margin-left: 0;
              margin-bottom: 0;
              vertical-align: middle;
              width: 490px;
              float: left;

              li {
                line-height: 18px;
                display: inline-block;

                a {
                  position: relative;
                  float: left;
                  line-height: 18px;
                  text-decoration: none;
                  background-color: #fff;
                  border: 1px solid #e0e9ee;
                  margin-left: -1px;
                  font-size: 14px;
                  padding: 9px 18px;
                  color: #333;
                }

                &.active {
                  a {
                    background-color: #fff;
                    color: #e1251b;
                    border-color: #fff;
                    cursor: default;
                  }
                }

                &.prev {
                  a {
                    background-color: #fafafa;
                  }
                }

                &.disabled {
                  a {
                    color: #999;
                    cursor: default;
                  }
                }

                &.dotted {
                  span {
                    margin-left: -1px;
                    position: relative;
                    float: left;
                    line-height: 18px;
                    text-decoration: none;
                    background-color: #fff;
                    font-size: 14px;
                    border: 0;
                    padding: 9px 18px;
                    color: #333;
                  }
                }

                &.next {
                  a {
                    background-color: #fafafa;
                  }
                }
              }
            }

            div {
              color: #333;
              font-size: 14px;
              float: right;
              width: 241px;
            }
          }
        }
      }
    }
  }
</style>